[tex]y = - 3x + 1[/tex]

[tex]x = 8 \\ y = - 3 \times 8 + 1 = - 24 + 1 = - 23[/tex]

[tex]x = - 2 \\ y = - 3 \times ( - 2) + 1 = 6 + 1 = 7[/tex]

[tex]x = - 0.5 \\ y = - 3 \times ( - 0.5) + 1 = 1.5 + 1 = 2.5[/tex]

[tex]x = 10 \\ y = - 3 \times 10 + 1 = - 30 + 1 = - 29[/tex]